Linux System Architect

We are seeking a skilled Linux system architect to design and implement scalable, secure, and high-performance server systems from scratch.

• System Design and Implementation: Design and deploy Linux-based server systems from scratch, including installation, partitioning, system initialization, and configuration of services according to best practices.
• Server Administration & Management: Perform ongoing administration, patch management, and performance tuning for various Linux distributions (e.g., RHEL, CentOS, Ubuntu, Debian).
• Monitoring & Troubleshooting: Proactively monitor server health, resource utilization, and logs; diagnose and resolve hardware, software, and network issues promptly to ensure high availability.
• Security Hardening: Implement robust security hardening practices, including firewall management, SELinux/AppArmor, vulnerability assessment, OS and application patching, and regular security audits.
• Backup & Disaster Recovery: Develop, maintain, and routinely test backup and disaster recovery procedures for critical systems and data.
• Automation & Scripting: Leverage scripting languages (Bash, Python, Perl, etc.) and automation tools (Ansible, Puppet, Chef) to automate routine tasks, system provisioning, and configuration management.
• User & Permission Management: Manage users, groups, privileges, SSH keys, and role-based access controls to ensure secure multi-user environments.
• Capacity Planning & Scaling: Analyze current infrastructure usage, forecast future requirements, and architect scalable solutions for growth.
• Documentation: Maintain comprehensive documentation for system configurations, processes, troubleshooting steps, and change management.
• Collaboration: Work closely with development, DevOps, network, and security teams to support application deployment, CI/CD pipelines, and infrastructure projects.
• Compliance & Best Practices: Ensure adherence to industry standards for Linux server management.

• Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent work experience).
• 4-8 years of hands-on experience administering Linux servers in a production environment.
• Strong foundational knowledge of Linux internals, filesystems, system boot process, and networking concepts.
• Practical experience in building servers from scratch, including bare-metal and virtualized/cloud environments.
• Expertise in configuring and managing core Linux services (Apache/Nginx, MySQL/PostgreSQL, DNS, DHCP, FTP, SSH, SMTP, etc.).
• Deep understanding of system security, including firewalls (iptables/nftables), SELinux/AppArmor, intrusion detection, and vulnerability management.
• Proficiency in shell scripting and automation of system administration tasks.
• Familiarity with configuration management tools (Ansible, Puppet, or Chef).
• Experience with backup strategies, disaster recovery, and high-availability solutions.
• Ability to troubleshoot complex system, network, or performance issues independently.
• Excellent written and verbal communication skills in English.
• Ability to work in 24x7 rotational shifts and be available for on-call support as required.

• Certifications such as RHCSA, RHCE, LFCS, or LPIC.
• Experience with public clouds (AWS, Azure, Google Cloud) and hybrid cloud environments.
• Exposure to containerization and orchestration tools (Docker, Kubernetes, OpenShift).
• Knowledge of virtualization platforms (KVM, VMware, Proxmox, etc.).
• Understanding of Infrastructure-as-Code (IaC) principles and tools (Terraform, CloudFormation).
• Experience with monitoring and alerting systems (Nagios, Zabbix, Prometheus, Grafana).
• Ability to analyze and optimize system performance at scale.
• Familiarity with agile methodologies and DevOps practices.
• Basic understanding of Windows Server environments for heterogeneous infrastructure management.
• Experience in supporting databases (MySQL, MariaDB, PostgreSQL) and application servers.
• Contributions to open-source projects or active participation in Linux communities.